Question: Who was the spouse of Empress Matilda on January 1, 1128?
Paraphrase: Empress Matilda was married to whom on January 1st, 1128?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q150872 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1128')) }